Vacuum-vent for jars.



No. 866,938. IPATENTBD SEP'T. 24,190?

' E. U. KINSEY.

vAcpUM VENT FOR JARS. APPLICATION FILED APLZQ. 1907.

UNITE STATE ERNEST U. K INSEY, OF RUTHERFORD, NEW JERSEY.

VACUUM-VENT FOR JARS.

Specification of Letters Patent.

Patented Sept. 24, 1907.

Application filed April29,1907. Serial No. 370,776.

To all whom it may concern:

Be it known that I, ERNEST U. KINSEY, a citizen of the United States,residing at Rutherford, in the county of Bergen and State of New Jersey,have invented an Improvement in Vacuuln-Vents-ior Jars, of

. which the following is a specification. l

My invention relates to the construction of an opening or vent for jarsholding articles of food vacuum sealed and especiallyjo jars for holdingfruits and It) vegetables, having ver and body of lastingperihanent--eonstmctiijn nihich with other capabilities are designed forrepeated use, with the object of being able to open the vent with thefingers or a small screwdriver to let the air into the jar and break theseal and to thereafter utilize the instrumentality for further andrepeated use. 1

In carrying out my invention I provide a longitudinally movable tubularscrew member having an air vent opening through the stem thereof, a headand washer and a nut through which the screw member moveslongitudinally.

The vent or opening is at the base of the head and the under surface ofthe head seats pgainst the washer, both of whichparts are of greaterdiameter than the tubularstein so that an air tight joint is formedthereby. These parts are preferably secured to the cover of the jar atthe center but they may be secured to another part of the cover or tothe jar at any desired location.

In the drawing, Figures 1, 2, 4 and 6 are partial-v cr- B0 tical centralsections showing forms of my invention. Fig. 3 is an inverted plan atthe center of Fig. 2. Fig. 5 is an inverted central plan of the partsshown in Fig. 4, and Fig. 7 is an inverted plan oi the screw mem berFig. 6. I

My invention is especially adapted to a iruit or 1 similar jar to bevacuum sealed, in which the body of l the jar is made of glass or othersuitable vitrified material and the cover of glass to be held on by ascrewspan or a cover of metal to screw on to the glass neck of the jarand with which there is a porcelain lining and a rubber seat forthemctal top.

Fig. 2 represents the well-known iorm oi jar and cover in which t:represents a metal top with a screw flange a, b the screw-threaded neckoi the jar in which theneck and the body are made of glass or othervitrilied material, the edge of the top, or cover coming down upon awasher b and in connection with which E'Inctal top or cover there is aporcclain or vitrified material lining c.

In Fig. 1 I have shown a glass top 1! with a central metal plate Llfitted therein; the body 0 of glass or vitrified material being oil-sotto engage the washer e of rubber or similar material which isl'ntorposcd ,1 between the edge or top of the cover and the shoulder ofthe body.

Referring to Fig. l, f represents the oil-set not placed at the centerof the cover or top and extending through the vitrified material coveror top and below the same,- f 1 being the washer preferably employed andCOllllllg between the off-set part of the nut and the under surface oithe top, there being a washer h preferably of rubber upon the outersuriace of the metal plate a. i represents a longitudinally movabletubular screw member and i the head of the same. The stem i isexteriorly threaded to [it the interiorly threaded off-set nut f and thehead i is of considerablygreater diameter than the tubular stem andunder the head an opening 2 is made through the stem, the flange of thehead setting down upon the washer h. It is apparent that when thisscrew. member bears upon the washer h that comi'nunication irom withinthe jar with the exterior air is shut off and in this position of theparts the jar can be vacuum sealed with. any apparatus provided forthat. purpose, and to break the sea l it is only necessary to turn thehead i and screw stem 1' to bring the edge oi the head above the suriaceof the washer so as to permit the air to pass through the opening 2 andthe tubular nut into the jar so as to establish an equilibrium ofinternal and external pressure. lhe cover can their be liitod and thecontents oi the jar removed. This form of my invention is adapted forrepeated use with the jar.

In Figs. 2 and 3, the porcelain or vitrilied lining to the metal top isprovided with oppositely disposed lugs c of a width agreeingsubstantially with the depth oi a flaring sided nut k slipped betweensaid lugs so that the interiorly threadedopening therein is concentricwith the opening in the lining c'. The upper lace oi this opening isinclined to receive a tapering conical washer h. The screw-head l isalso conical and the stein l thereoi is tubular and ex :riorly threadedto lit the not It, with an opening at 15 similar to the opening 2 inFig. l. l have shown the head l as knurled or cross-ribbed so that itmay be turned by the finger instead oi a screw-driver, although I do notat all limit my invention as to how the longitudinally movable tubularmember shall be turned. The operation is the same witliregard to thispart as to the parts Fig. l.

in the form oi my invention shown in Figs. 1 and 5, the porcelain lininga is provided with a central depressed portion c", the longitudinallymovable tubular screw member is provided with a llathead m and the metalpart a is depressed or dishing to correspond with tlldiilJl'CUlttllllining, and l preier to employ a nut 0 similar to the nutfin Fig. lfitting into this depressed center 0" and a washer 1 coming between thesuriace oi the metal a and the under surface oi the head m, and in thisform oi my invention instead oi employing the opening at for 3 as in theother iorms, the tubular stem 11:. is cut through on one side to'theundersuriaco oi the'hoad, consequently at once that the head is raisedby turning the air is admitted to the ion transfl'ersely and centrallyslotted a t. m

'st m and lnteg'uxl head memhel: having an allve'nt opem mo"able tubu a:scr'em stern and intggral hea'd member The' formof nay-invention howh inFigs; Sand; 7 isf f the same as tho form shown in Fig. 4 with'theexception of the nut o and the washor between the he'adof this huhandthe under surfa ce of the hhing c; the tubular screw membel in' thisinstan'oe screwing di; rectly info the porcelain lining c, and haying astem against which the he'qd of said member seats,

2. A vacuumwent for jars, oomprlflng a longitudinally and the inferiorof the jar hzivlngau ah vent oponing thx ough the s tem beneath th ohead; a washer against which the head of said memhmr seats and anut-through which the threaded stem of said member with the head thereofis longitudinally mm'nhlo.

3.'I n a'vacuum vent for jarg the combination with the 1hr topor cover,of :1 'centmlly npertured thrcadvd nut sedtd in the hodj of the top orcover, an 'exterlorly threaded t'ubular stem 'an dhead lntogx'altherewfth, thorn being an opening through the tubular stem and said stem'recehod ih'shid thre dc'd'liut and longitudinally movable therein, awasher ada'pted to He 'ngalnst the outer face of the top or cover andagainst which the under run-face of said head iS adapted. to seat toclose oh the opening anGwhl'ch-when turned imdthe hnd rnlsed opon upcour munlcaflon through the tuhulaI stomibet-woen tho air Signed by ;ncthls' 22 11am April 1907.

I-nmns'if U. IUNSEY. Witnesses: w

ID. ZACHARXASEN.

